Plate Heat Exchanger

Patent No. EP4269925 (titled "Plate Heat Exchanger") was filed by Hangzhou Sanhua Research Institute on Apr 28, 2023. The application was issued on Jan 21, 2026.

Patent Summary

Patent Family

Patent family tree
Statuses, jurisdictions and citation links are shared on request.

Patent Oppositions

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.

CompanyOpposition DateRepresentative
SWEPOct 20, 2026STROM & GULLIKSSON

Dossier Documents

The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.

EP4269925

HANGZHOU SANHUA RESEARCH INSTITUTE
Application Number
EP23170746A
Filing Date
Apr 28, 2023
Status
Granted And Under Opposition
Dec 19, 2025
Publication Date
Jan 21, 2026